.my-input-number {
  position: relative;
  display: inline-block;
  width: 140px;
  line-height: 38px;
}

.my-input-number span {
  -moz-user-select: none;
  -webkit-user-select: none;
  -ms-user-select: none;
}

.my-input-number .my-input {
  display: block;
  position: relative;
  font-size: 14px;
  width: 100%;
}

.my-input-number .my-input__inner {
  -webkit-appearance: none;
  background-color: #fff;
  background-image: none;
  border-radius: 4px;
  border: 1px solid #dcdfe6;
  box-sizing: border-box;
  color: #606266;
  display: inline-block;
  font-size: inherit;
  height: 40px;
  line-height: 40px;
  outline: none;
  padding: 0 15px;
  transition: border-color 0.2s cubic-bezier(0.645, 0.045, 0.355, 1);
  width: 100%;
  padding-left: 50px;
  padding-right: 50px;
  text-align: center;
}

.my-input-number .decrease,
.my-input-number .increase {
  position: absolute;
  z-index: 1;
  top: 1px;
  width: 40px;
  height: 38px;
  text-align: center;
  background: #f5f7fa;
  color: #606266;
  cursor: pointer;
  font-size: 13px;
}

.my-input-number .decrease {
  left: 1px;
  border-radius: 4px 0 0 4px;
  border-right: 1px solid #dcdfe6;
}

.my-input-number .increase {
  right: 1px;
  border-radius: 0 4px 4px 0;
  border-left: 1px solid #dcdfe6;
}

.my-input-number .decrease.is-disabled,
.my-input-number .increase.is-disabled {
  color: #c0c4cc;
  cursor: not-allowed;
}